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株洲化工集团磷肥厂年产过磷酸钙30万t,系干法生产,其风扫磨工序由3台φ2 000 mm×4 000mm的球磨机、3台7-29型排风机、3台3L-8/10空气压缩机、1套润滑油系统和1套冷却水系统等20多台设备组成。其中排风机轴承箱,压缩机一、二级冷却水夹套,球磨机前、后轴瓦,润滑油系统冷却器等都需要用水冷却,其冷却点分布广,冷却点阀门控制数量多,高度相差大,操作不便。原来采用自来水冷却,冷却水直接从地沟排走,每天需耗自来水600～700 t。目前在公司环保压力越来越大的情况下,将这一部分冷却水回收利用,实现废水的零排放,经济效益和环保效果显著。
Zhuzhou Chemical Group phosphate fertilizer plant with an annual output of super-calcium phosphate 300,000 t, the Department of dry production, the wind sweeping process consists of 3 φ2 000 mm × 4 000mm ball mill, 3 7-29 exhaust fan, 3 3L-8 / 10 air compressor, a set of oil system and a set of cooling water system more than 20 devices. The exhaust fan bearing box, the compressor first and second cooling water jacket, the ball mill before and after the bearing pads, lubricating oil cooler needs water cooling, the cooling point is widely distributed, the number of cooling valve control valve, a large difference in height , Inconvenient to operate. Originally tap water cooling, cooling water drain away directly from the ditch, daily consumption of tap water 600 ~ 700 t. At present, under the circumstance of increasing environmental pressure on the company, this part of the cooling water recycling, to achieve zero discharge of waste water, economic benefits and environmental protection effect is remarkable.